21809410

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{947}}^1$

素因数の和:1015

約数の個数: 48

約数和(自身を含む): 46687104

約数和(自身を除く): 24877694

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 49, 70, 94, 98, 235, 245, 329, 470, 490, 658, 947, 1645, 1894, 2303, 3290, 4606, 4735, 6629, 9470, 11515, 13258, 23030, 33145, 44509, 46403, 66290, 89018, 92806, 222545, 232015, 311563, 445090, 464030, 623126, 1557815, 2180941, 3115630, 4361882, 10904705, 21809410]

約数ペア:

[(1, 21809410), (2, 10904705), (5, 4361882), (7, 3115630), (10, 2180941), (14, 1557815), (35, 623126), (47, 464030), (49, 445090), (70, 311563), (94, 232015), (98, 222545), (235, 92806), (245, 89018), (329, 66290), (470, 46403), (490, 44509), (658, 33145), (947, 23030), (1645, 13258), (1894, 11515), (2303, 9470), (3290, 6629), (4606, 4735)]